An element is made up of only one type of atom.
Answer:
Coal and petroleum.
Explanation:
Coal and petroleum are the two examples that can be converted into fossil fuel after being buried under pressure for a long period of time. Both coal and petroleum formed underground with the presence of very high temperature and pressure. Coal is formed when the plant material is placed under high temperature and pressure for thousand of years while on the other hand, petroleum formed when dead bodies of animals are present underground for a very long time with a suitable pressure and temperature turn into petroleum.
This is called the carrying capacity. It's the maximum biological population size for an environment. There are many factors to reaching the carrying capacity such as water, food, and habitat. It's kind of sad when you think about it.
Work cited - Wikipedia, Google
No, because the immune system is already battling with the virus or disease
